Six-wheel truck



' Oct. 28 1924.

w. J. KNOX SIX-WHEEL TRUCK Filed June 26, 1922 .Z'nverz-Z'av- Williamm Knox l 2%@ Patented Oct. 28, 1924.

UNITED Y TES WILLIAM J. KNOX, 0F DUBOIS, PENNSYLVANIA.

SIX-WHEEL TRUCK.

Application filed June 26, 1922. Serial No. 570,974.

To all whom t may concern.'

Be it known that I, WILLIAM J. KNox, a citizen of the United States, residing at Dubois, county of Clearfield, and State of Pennsylvania, have invented a certain new and useful Improvement in Six-Wheel Trucks, of which the following is a full, clear, and exact description, such as V,will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this application.

V My invention relates to railroad rolling stock and consists in an improved six wheel truck, especially adapted for freight equipnient.

The objects of my invention are to provide an articulated truck possessing such iexibility as will enable it to readily travel around curves and over uneven trackand which is adapted to support the car body at the sides of the latter exclusively.

In the accompanying drawings, illustrating a selected embodiment of my inve'n-' tion,-

Figure 1 is a side elevation of my truck with the brake rigging' and Vother incidental equipment omitted. l Figure 2 is a partial top view of the truck.

Figure 3 is an end view of the truck with the body supporting member sectionedat its point of support.

The truck wheels lare mounted on the vor dinary axles 2 provided with journal boxes 3. Four of the 'truck wheels, two on each side, carry side frames 4, each of which is shown as beingvcast in one piece, comprising an upper portion 5 of box-section and a lower portion 6, said portions being separated by a substantial ope-ning which prof vides for the passage through the frame of a spring plank 7, and a floating transom 8 yieldingly supported on the spring plank by coil springs 9L p The frames 4 are preferably provided with integral brake hanger lugs 10. The journal box of the other wheel on each side of the truck yieldingly supports one end of an arch 12 which extends lengthwise over the upper member 5 of side frame 4 and, being channel-shaped, is adapted to straddle member 5, enabling the other end of the arch to be pivotally supported at 13 upon the outer end of transom 8. .y

A second transom or spreader member 14 is pivoted at 15 to the arches 12 and is substantially V-shaped, its apex extending inwardly toward transom '8 and assembled therewith by a pivotal connection 16. Pivotsrl are disposed in a vertical plane and pivots 16 in a horizontalplane, this a'ssembly providing the two-'wheel portion of the truck with the'desired' degree'of movement relative to the four-wheel portion'of the truck. Transom 14 isV provided with a king pin bearing 17 which is adapted4 to provide means for centering the body of the car to be mounted on the truck, but is notintended to support the latter. The car bodyis entirely supported at its. sides by roller or rocker bearings 18 mounted in suitable recesses upon the upper faces of arches 12. These bearings are disposed lengthwise of the arches in such manner that the car weight is distributed equallyl on the wheels.

In the construction shown, the horizontal distance from the arch'bearing'13 to the center of the body bearings isone-third of the distance from arch bearing 13 to the O center of the axle of the right hand wheel on the truck.v This distributes two-thirds of the load carried by arch 12 to the center of the four wheel, truck, one-half of this load or one-`third of theentire load on the archV being distributed to eaohofthe two wheels on the one side of the truck by transom 8 and side frame 4, the other third of the arch load being distributed directly to the third wheel' on the same side of the truck.

ith trucks of this type, the car body is carried at four points, these points resting on rollers on rockers located in the sides ofthe trucks and the body load is equally distributed to all of the truck axles. The transom 8 with spring plank 7 serves as a cross tie for the truck frame and transfers the load on arches 12 to the two springs 9, but is not provided with'a center plate. Transom 14 similarly serves as a cross tie for arches 12, links the two portions of the truck together, and serves to center the car body,

but,`like transom 8, does not have a center plate and does not carry any portion ot the load.

l contemplate any modiiications ot my invention which are included within the scopo of the following claims.

Vhat I claim is:

l. ln an articulated truck, side trames carried by one truck, a transom carried vsaid side trames, members carried by said transom and the other truck, and a transom pivotally connected to said members and to said tiret-mentioned transom.

2. In an articulated truck, a truck having side trames, a transom carried thereby, a second truck, arches each aligned with one oi said side frames and supported on the same and on said second truck and prot/'ined with an inwardly extending clevis haring hori- Zontal jaws, a transom having tongues at its ends pivot-ed in said jaws and between its ends having a forward projection pivoted to said first-mentioned transom.

3. ln a six wheel truc-lr, side frames can ried by tour wheels ot the truck, a transom yieldingly mounted on said frames, arches carried by said transom and the other two wheels ot the truclf` and a one-piece ishaped transom having the ends ot its leOs carried by said arches and its apex carried by said first-mentioned transom.

t. In an articulated six wheel truck, side frames carried by tour wheels of the truck, a transom yieldingly mounted on said trames, arches carried by said transom and the other two wheels of the truck, a transom pivot-ally connected to said arches and to said first-mentioned transom and provided with a hing pin bearing.

5. ln an articulated six wheel truck, side trames carried by tour wheels ot the truck, a transom yieldingly mounted on said trames, arches carried by said transom and the other two wheels ot the truck, a transom pivoted to said arches in a vertical plane and to said First-mentioned transom .in a horizontal plane and provided with a king pin bearing,

6. vil. wheel truck comprising vo axles, side frames mounted thereon, transom supported on and spacing said side trames., a third axle, arches supported on said transom and said axle, a second transom spacing said arches and united to said first-mentioned transom at the center thereot, and bearings for the car body on said arches.

7. In a truck, wheels, axles, and journal boxes for same, side trames each supported at spaced points on two adjacent journal boxes on one side ot the truck, arches each yieldingly supported at one end on the third journal box on one side of the truck, and at its other end yieldingly supported on one ot said frames, bearings for the car body on said arches and means pivotally connected to said arches and to said trames to brace the sides ot the truck.l

8. ln a truck, wheels, axles, and journal boxes for same, side trames each supported at spaced points on two adjacent journal boxes` on one side ot the truck, arches each yieldingly supported at one end on the third journal box on one side ot t ie truck, and at its other end yieldingly supported on one of said frames at a pointmidway between the supports ot the latter, and a bearing for the car body on each arch atv a point halt as tar from its frame-supported-end as from its journal-box-supported end and a member provided with a king pin bearing and pivotally connected to said arches and side frames.

9. In a six wheel truck, side trames mounted on two wheels on each side ot the truck and connected by a transom, arches trom each ot said side trames to the 'third wheel on the respective sides of the truck, andv connected by a transom, said transoms being pivotally connected togetherinten mediate their ends.

l0. ln a six wheel truck, side trames mounted on two wheels on each side of the truck and connected by a transom, respective arches from each of said side trames to the third wheel on therespective sides ot the truck and pivotally connected by shaped transom, the apex of said arch connecting` transom being connected to the middle of said frame transom so as to have pivotal movement thereon in a vertical plane only, a center pin bearing in one ot' said transoms, and car body sup-ports on said arches only.

1l. ln an articulated truck, a truck having side frames, a transom carried thereby, a second truck, arches carried by said transom and said second truck, and a transom p'ivoted to said arches and to said first mentioned transom.

l2. In a six wheel truck, side frames supported on tour of the wheels and each including a longitudinal upper member.. a spring plank carried by said trames, spi s mounted thereon, a transom extendi g through said frames beneath said members and supportedV on said springs, and body supporting arches each supported at one end on one of the other two wheels and at its other end straddling said member and supported on said transom.

13. In a six wheel truclr, side trames mounted on four of the truck wheels, and car body supporting members each yieldingly supported by one olf the remaining two wheels and by a transom carried by said frames, and having a pocket in its upper tace provided with roller bearings adapted to support the car body at its sides only.

lll. In an articulated car truck construction, a. ,plurality ot trucks and car body positioning means jointly carried by said trucks and tree to pivot vertically in respect llU to one of said trucks and to pivot horitruck having a spring supported transom, a 1o zontally in respect to another of said trucks. second truck having a V-shaped spring sup- 15. In an articulated car construction, a ported transom, the apex of said V-shaped plurality of trucks, separate car body suptransom being pivotally connected to said 5 porting members each jointly carried b-y rst-mentioned transom. Y

said trucks, and a rigid connection for said In testimony Whereof I hereunto aiix my 15 members pivotally connected thereto and signature this fifth day of May, 1922. pivotally connected to one of said trucks.

16. In an articulated car construction, a WM. J. KNOX. 

